HAYWARD H400FD IF Code On Display
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
85%
CONF
|
Hayward Silicon Nitride Igniter
The 'IF' code indicates an Ignition Failure. This specific part is a Silicon Nitride igniter which is prone to developing microscopic cracks or surface oxidation over time, preventing it from reaching the temperatures necessary to ignite the gas-air mixture or failing to properly facilitate the flame sensing (rectification) signal back to the control board.
SKU: FDXLIGN1930
|
|
|
10%
CONF
|
Hayward Flame Sensor
If the heater actually ignites but then shuts off after 2-5 seconds and displays 'IF', the flame sensor is likely coated in carbon or corroded, preventing the ICB from 'seeing' the flame even though combustion occurred.
SKU: FDXLFLS1930
|
|
|
5%
CONF
|
Universal H-Series Integrated Control Board
If the igniter and sensor are tested and functional, the logic circuit on the ICB responsible for interpreting the flame rectification signal may have failed, necessitating a board replacement.
SKU: IDXL2ICB1930
|
DIY Repair Guide
Watch exactly how to replace the Hayward Silicon Nitride Igniter.
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.